South-Korean boy band BTS press conference

The video tutorial begins with an introduction to the world stage and sets the context for the discussion. It then moves on to talk about maintaining performance consistency and the importance of mindset. The speaker expresses sincerity and gratitude, emphasizing the value of communication. The tutorial concludes with final thanks and closing remarks.

What message does the speaker want to communicate by saying 'it's OK to be here'?

What does the speaker mean by 'convey the sincerity'?